Type-writing machine.



3 SHEETS-SHEET l.

Patented June 4, 1912.

P. J. DREHER.

TYPE WRITING MACHINE. APPLIoATIo FILED JULY 31,1911.

w -......u s@ .null 111:

fM/ENTUR.

Mom,

P. J. DRBHER.

TYPE WRITING MACHINE. APPLIGATION FILED JULY s1, 1911. 1,028,556.

P. J. DREI-IER. TYPE WRITING MACHINE.

APPLIGATION FILED JULY s1, 1911.

Patented lJune 4, 1912.

3 SHEETS-SHEET 3.

UNITED STATES PATENT onirica.

PHILLIP JACOB minima, or TOLEDO, onio.

TYPEWiiITQING MACHINE.

To allwho'mz't may concern Beit known that I, PHILLIP JACOB DRE- HER, a citizen of the United States, and a resident of Toledo, in thecounty of Lucasand Stateof Ohio, have invented a certain new and `useful Type-Writing Machine; and Idohereby declare the` following' to be a full, clear, andv exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figuresv of reference marked thereon, which form a part of this specification.

` My invention relates to automatic'type-lv vision of `a simple mechanism of this class, which is eiiicient inits operation, strong and,

durable in its construction, inexpensive of manufacture, and capable of being "easily attached to most if not all makes of typewriters on the market.

' The inventiony is fully described in the following specication, and while, in: its broader aspect, it is capble'of embodiment in lnumerous forms a preferred embodiment thereof' is illustrated in the accompanying drawings, in which,- l

v Figure 1,l is a plan view of -a typewriter and a portion of the mechanismcomprising my invention' associated therewith, with suchmechanism in linestarting position n-'and with the typewriter shown in partial outline. Fig. 2 is a-V side elevation thereof with the associated'control parts, portions ofthe saine being broken away.. Fig. 3 is a front-elevation of the mechanism associated with the typewriter,` with the type? writer platen in engagement therewith.

Fig. 4 is an enlarged detail partly inf section of a portion of thecarriage returning mechanism, and Fig. 5 is an enlarged `detail of l a portion ofthe tripping parts of such mechanism.

Referring to the drawings, 1 designates af typewriter desk or case with whichthe in- Specification Aof Letters iatent.

vention is associated, which 'is' shown in the present instance as having a lowered top y portion '2 upon which the typewriter 3' ma rest;

' The usual rotary typewriter platen is indicated at 4, the movable typewriter carringe with which it is associated not being shown 'as it forms no part of my invention Patented Junei, i912.

Application ledhJ'uly 31, 1911. Serial No. 641,560.

and the stylesthereof vary `for 'different makes of machines. v

A bar 5 forming a ,track for the carriag of my mechanism is mounted adjacent to the upper rear portion of the typewriter transversely thereof in any suitable-manner, as by having its ends attachedv to plates or frame standards 5 which are setvertically within the lowered portion of theV desk or case 1V against the sides thereof, as best shown in Figs. Q and 3. The carriage referred to is shown in the present instance as comprising'abeam 6, through which the track-barA 5 freely passes, andi vas having arms 7.-7 `rigidly projecting upward -and forward from the opposite end portions thereof and attaching to the ends of the platen-roll shaft in a suitable manner to im'- part longitudinal'. movements. to the platen when the carriage is moved' upon its track and 'to permit a turning of thecarriage rela' tive tothe track-bar. The bar 5 is squaredor'of other irregular form inoross-section, and the openingi through thercar-riage beam 6 is of 'corresponding same. It will be understood'that the weight. of the platen: isnot supported by thercarriage 6-7 but is borne entirely by the typewriter carriage (not shown) in the usual manner, the carriage 6-.7 only serving to' impart retracting'moveinents to the platenroll and its carriage.

The means shown inthe present instance for 4attaching the retracting carriage 6-7 to the platen-roll consists in providing one ofthe arms '7 ofsuch carriage with a spring pressed plunger 8, whichv yieldinglybears axially against the associated platen knob 9,

`whilel the other ar-m-Z-isprovided': with an adjusting thrust screw 10 for bearing axially against the end of the other knob 9, asbest shown in Fig., 1. The coaction ofi the plunger 8 and=- screw 10'. withy Ithe platen 'knobs is such as to *permit a free turning of the platen-roll and its lmobs relative to the form -to fit over the* arms 7, while the yieldability' of the plunger 8 cushions a stopping of the carriage when the platen-roll has reached the vlimit of its. retracting stroke.

An arm 11 is fixed to and projects rearward from the carriage beam 6 andhas a tooth 12 projecting rearward rom its rear end for limited longitudinal reciprocatory movements relative thereto, vasibestshown in Fig. 4. The tooth is shown, in the present instance, as having its inner vend fitting 'wit-hin a socket 13 in the rear end of the arm 11,` being held for limited longitudinal movements within such socket by a pin 14" .projectinr through op osing walls ofl said socket and a transverse y elongated o'pening 15 in said tooth. The tooth 12 when projected is adapted to have its rear end engage within the groove of a worm 16 which'is located immediately to the rear of said tooth transversely of the typewriter with its ends journaled in the plates 5', or supported in any other suitable manner. The worm 16 is continuously driven by a belt 17 running from a motor 18 t'o apulley 19 on the wo-rm shaft,

or it may be driven in any other 'suitable through which carrying pins or screws 24 freely work. One of the pins 24projects from an angled bracket 25 and the` other from an angled arm 26 of a bracket 27 said brackets being attached to the respective plates 5, as shown in Figs. 1 and` 3. T he tooth shifting bar 20 is normally held at-the limit of its right hand stroke by the action thereon of a coiled compression spring 28 which is carried by a stud projecting from theA associated end, of said bar and has its outer end-thrust against the associated plate .5. `The inclination of the slots 23 relative to the bar is such'that a movement of the bar 20 to the left from retracted or normal position will impart alateral movement vthereto in the direction. of the worm 16 to move the 'tooth 12 into meshing engagement Vwith the worm as is apparent by reference to Fig. 1, the movement of the toothv with the bar being actuated by the coaction of the tooth lug 22 with the walls of the barslot 21. To' yieldinglyprevent' play of the tooth-lug v22 Within the bar-slot 21 and at the Sametime permit saidv parts to have a loose sliding fit, a coiled compression spring y29 encircles a portion of the tooth4 12 and has its opposite ends thrust against the arm 11 and lugs on the tooth to normally hold the -lug 22 in contact with the rear or Iouter wall of the bar-slot.

The movements of the bar 20 against the tension of the spring 28 are actuated by suitable pneumatic means, which is shown as comprising apneumatically operated bellows 30 `and a lever 31, which latter is fulcrumed to an arm 32 projecting from the associated side of the case 1, and has its upper end pivotally attached to the right hand end of-the bar 20, as at 33, and its lower'end attached to the movable part o the bellows 30. The arrangement and man! ner of connection of the bellows 30, lever 31, and bar 33 are such that upon a collapsing movement of the movable bellows part to which, the lever is attached, -the upper end of t-he lever will be thrown'to the .-left to eilect a consequent movement of the bar 20 in the same direction. The bellows 30 has a tube 34 projecting therefrom to an air passage in an associated tracker-board 35, in engagement with which a perforated control sheet 36-passesl to control' the 'admission of air to the bellows through said tube,

The perother .-matter as more fully described in my copending application Serial No. 638,894.

The sheet 36 is shown as having its coursel directed by guide-rolls ,37, and as being driven by a drive-roll 38 in coaction with an idler-roll 39. The drive-roll 38 is driven inany suitable mannerr 4 A When the ltooth controlling bar 20 has been shifted Vto the left', or in a direction to effect an engagement of the tooth 12 with; the worm 16, a notchr40 will have'moved into register with a spring-pressed catch 41- to permit the upper end thereo-fto-move "into engagement with suchnotch to prevent a retraction of the bar 20 until said catch vhas been withdrawn from engagement with` the notch 40 for such purpose. The` catch 41 is shown 'as being vertically disposed and guided by lparts ot' the bracket 27, with its upper lenel in position to engage the notch 40 when moved into register therewith. A'

spring 4 2 acts on the catch to influence its pose of effecting an automatic retraction of the catch 41 from holding engagement with the bar catch 40 when the platen retracting vcarriage 6-7 has been moved to the limit of its right-hand movement by the coperative action of the worm 16 and tooth 12, anangled lever 43 is pivoted to a. portion of the bracket 27 adjacent the catch' 41 and has one end disposed to act upon a lug 44 on the catch 41 to impart a releasing movement to said catch when the lever is oscillated in one direction, as will be understood by reference to Figs. 3 and 5. The catch coacting end of the lever' 43 .is preferably shaped substantially as s hown to enable its end to impartr.a downward pressure upon the catch lug 44 `when the lever is oscillated in one direction while the other end thereof extends upward j engagement with said notch.l For the pur- I from its fulcrum amd' thence forward in position fora bumper or thrust-rod 45, which projectslaterally from 'the carriage arml'l to coact therewith, as shown'. The bumper or thrust-rod 45 is adjustably carried bythe to move to normal positionl under the influence of the spring 28, lwhich movement of the b ar effects a Withdrawal of the'to'oth 12 from .engagement `with the drive worm 16.

The line spacing means of my mechanism will now be described;-

A line-spacinglever ,53,

' Mounted in the present instance" in ad- Vance of the bar 20' and slightly ,below the plane thereof in arallelism therewith is a longitudinally shiftable bar 46, which is s upportedby pins 47 projecting from portions of therespective brackets 25 and. 26 and working through diagonally disposedv slots 48111 sa1d l bar. The bar 46 is normally held at 'the lifnit of its movement to the rightby the action thereon of-a coiled compression sprin 49 which is mounted inter` mediate the le end'thereof and the'associated plate 5". The slots- 48-are so inclined relative to the bar 46 as to coact with the pins 47 to cause said bar to have a lowering movement when moved to the left or against the tension of the spring 49. Upon a lowering movement of the bar 46 it acts upon'the vrear ends of forwardly-projecting levers 50-50,.which lever ends project within/registering openings. in said bar, to effect a raising of, the forward ends thereof. The levers 50 arefulcrumed'to brackets 51, projecti'ng from the respective plates 5", and project at the ends o theplaten-roll without the limits ofl reciprocatory 4movements thereof andv have`their forward ends connected by a rod 52, which, in the present in-` stance, is of-` U-shapeI or. bail-like form and is' adjustably suspended from said levers. which ma be lt-he spacing lever customari y employe in machines of this type, is pivoted' to'L the rear of the platen-roll, as' tota block 54- whi'chis adjustably mounted? on the carriagebeam 6, and projects forwardly therefrom, in the present instance being loopedg overA one end portion' off theL platen roll shaft and thence extendin'gover the rod 52 in contact therewith whereby a lifting of the forward ends ofthe levers 50 will impart' an upward movement to said spacing-lever.

A pawl 55is carried bythe spacing lever 53 and coacts with af ratchet-wheel 56 on the associ- .ated end portion of the platen-roll.v shaft to impart predetermined rotary movements to the platen-roll Whenthe lever 53 is raised for such purpose. The longitudinal movements of the bar 46 against the'ltension. of

.its spring 49 are actua-ted both by a bar n er. A thbe 61 leads from a passage in the tracker-board 35 to the bellows 60 whereby the collapsingof the same is controlled by f i perforations 1n the sheet 36 registering with the associatedtrcker-board passage. An exhaust'pump 62 has connection with the bellows 30 andi 60 through the pipe 63, as shown in Fig. 2. f

The means Whichisoperable to impart line spacing movements to. the=`fplaten roll independently Aof4 the action of the platen roll retracting* mechanism isc-claimed in a separate divisionall application, Serial No. 651,269, filed October 24, 1911.

In the operation of my invention the perforated sheet 36 `is set in motion andupon the. completion. ofthe writing of a line a perforation inthe same moves into register with: the tracker-board passage, which communicates throughthe tube 34 with the bellowsf30, Athus permit-ting the suction action of the-.pump 62to e ect'a collapsing of the bellows 30- in a mannerwell understood inthe. art'. Upon a collapsing of the bellows'30'in this manner the lever 31 is. moved to throwthe bar 20 to the left against 4the tension of its spring v28, which-movement of said bar, due 'to the 'coperating action of the diagonal slots 23 .therein and the guide pins 24, effects ,a lateral movement of said bar inl the 'direction of the worm 16 and a consequent moving of the tooth 121into mesh with said worm.- When the-bar 20 hasbeenl moved into position to place the tooth' 12: into engagement with the worm, the catch 41 will automatically move -into engagement 'with/a' registerin notch 40 in said bar to prevent;4 av retractmgmovement of the bar until.. the catch is released forsuch purpose. The worm`16,'which is continuously revolving, new acts upon the tooth 12. to effect a retraction of the attached carriage'G-- tofline starting position, the tooth-lug 2 2 moving in the bar-slot 21 durin such.- retracting: movement.. It' is obvious that the retracting movement of the carriage 6 7 imparts a corresponding movement to the platen-roll 4 to which it is attached. When the carriage 6 7 has substantially reached the limit of-.its retracting movement the bumper 45 attached thereto coacts with and moves 'thevlever `43 to eil'ect a lowering of the catch 41 from engagement with the notch V4O in the bar 20 to permit a return ofthel bar 20 to full retracted position under the influence of its spring 28, thus effecting a disengagement of the tooth r12 and worm to permit a stopping of the carriage in line starting posit1on. Upon a bar shifting movement of the lever v31 the finger 57 thereon acts on the spacer bar 46 to move the same against thetension of its spring 49 to impart oscillation to the levers 50-50 to raise thebar 52 andcoacting spacing lever 53 to cause t-he pawl 55 to act on the ,ratchet 56 to eHect a partial rotation of thev platenroll 4. Should a perforation in the sheet 36 move into register with the tracker-board passage to the -tube 61 and bellows 60 the lever 58 will be oscillated by a collapsing of the bellows 60 and eect a consequent movement of the bar 46 to move the line spacing levers as above described without'eecting a retraction of the f carriage and platen.

movement thereof.

It is obvious from the above that I have provided a simple and elicient pneumatically operated mechanism for eiiecting a retracting movement of the typewriter platen to line start-ing position and a line spacing I wish it understood that my invention, is not limited to any specific construction or arrangement of the parts except in so far as such limitations are speciiied in the claims.

Having thus described my invention, what. I claim as new and desir/eJ to secure by Letters Patent, is, Y

1. The combination with the platen-'roll of a typewriter, of a worm, means for driving said w'orn'i,-\and` pneumaticallycontrolled mechanism operable to coperate with said worm toimpart--retracting movements to the platen-roll. v l 2. The combination with the platen-'roll of a typewriter, of a rotating worm, pneumatically controlled mechanism operable to coperate with said Worm to impart retractingwmovementsto the platen-roll, and means actuated by a part "of said mechanism to impart line spacing movemen-ts tothe platenroll whensaid mechanism is 'actuat d.

3, The combination with a rotating worm,

`'of a carriage having engagement with the platen-roll 4and calpable'- of longitudinal movements therewit a tooth movably car-'4 ried by said carriagefor engagement wit-h the worm, and pneumaticallyoperated mechanism for controlling the worm engaging and disengaging movements of said tooth riage attached to and movable with said platen-roll and having a part capable of movement to engage and disengage said means to coperate therewith to move the carriage and platen-roll to retracted position, and pneumatically controlled mechanl sm operable to move said part to engage said means at predetermined intervals.

6. The combination with the platen-roll ot a typewriter, of power means, mechamsm normally disengaged from said power means, and adapted when engaged with said means to coperate therewith to impartretracting movements to the platen-roll and pneumatically controlled mechanism to engage and release the power means at predetermined intervals.

7. The combination with the platen-rol-l of a typewriter, of a rotating worm, a carriage attached to and movable with the platen-roll and having a part for engaging `with said worm to cause retracting movements to be communicated to the carriage and platen-roll from a rotation of said worm, a member acting on-said part to no1'- attached to' and'movable with the platenv roll and havingapart for engaging said power means to coperate therewith to impart .retractin movements to the carriage,

retain it from 'engagement with said power means and movable to effectits engagement with the power means, means automatically operable to move said member to place said part in engagement with the power means, catchfmeans forv holding' said member in l amember acting on'said part to normally' shifted position, and' means automatically l operable to' release saidy catch mean/s to permit a disengagement of said part and power -means when the carriage-has'been .retracted a predetermined exten 9. The combination with the platen-roll of a typewriter, of a rotatingfworm, a carto cause it to cooperate with the worm to 'riage attached to and movable with the platen-roll and having a movable part for engagingsaid worm to coperate therewith to move the carriage toline starting position, a member acting on said part to normally retain it from engagement with the wormv and movable to engage l said part with the worm, mechanism automatically operable to shift said member to elect an en gagement of said part with the worm, a catch for engaging and'holding the member in shifted po-sition, a lever-'movable-to effect i a disengagement of said catch and member,

and means adjustably carried 'by said catch for coacting wit-h and moving said' leverto release the catch at a predetermined point in a retracting movementof the catch.

10. The combination with the platen-roll of a typewriter, of power means, a carriage yieldingly attachedtoandmovable with the platen-roll, means guiding the movement of saidcarriage, mechanism acting on a ,part of said carriage to normally'v hold'sald part out of engagement withthe power means gagement with the opposite ends of said roll,

a part carried by said carriage for engagement with the worm to coperate therewith -to move the Icarriage land platen-roll to 'line starting position, and mechanism automatically op'erable to move said part at predetermined intervals to engage and release said worm.

12. The combination with arotating worm,

of a platen-roll carriage capable of longitudinalmovements, a platen-roll movable longitudinallytherewith', a tooth movably carried by said carriage for engagement with the worm, mechanism for controlling the worm engaging and disengaging movements .of said tooth to cause it to coperate wlth the worm to retract the carriage a predetermined distance, and means actuated by a part of said mechanism to impart line spacing movements to the platen roll. e 13. The combination with a platen-roll, of a rotating worm, means having longitudinal movements with the platen-roll and having a relatively movable part for engagement with said worm to coperate therewith to communicate retracting movements to said means and platen, automatically operable mechanism for controlling the movements of.

said partto engage and disengage. the worm atpredetermined intervals, and means actuated by a movement of said mechanism to impart line spacing movementsto the platen roll.

14. The Ombimionwith the pinten-rou of a typewriter, of rotatable means, a car- `riage attached Ato and movable with said -means to coperate therewit disengagement of said part' and power means platen-roll. and having a part capable of movements to engage and disengage said means to \coperate therewith to move the carriage andi platen-roll to retracted position, automatically controlled mechanism operable to move said part to engage said means atpredetermined intervals, and means actuated .by a part of said mechanism to impart'linespacing movements to the platen roll. l

15'. The combination with the platen-roll Y of a typewriter, of a` rotating worm, acarriage vattached to and -movable with the platen-roll and jhaving a part for engaging with said worm to cause retracting movements to be communicated to the carriage and platen-roll from a rotation of said worm, a member acting on said part to normally retain it out of engagement with said worm and movable to place it into engagement therewith, lmechanism operable to .automati- -callymovesaid memberto engage the worm at lpredetermined' intervals, and line spacing means actuated -`by a movement of said mechanism.

16. Thecombination with the platen-roll of a typewriter, 'of power means', a carriage attachedl to and movable with the platen-roll and having a part for engaging said'power to impart retracting movements to the carriage,.a member acting'on said part to normally retain it from engagement with saidgpower means and movable to a'ect its engagement ,with

the power means, mechanism automatically operable to move said member to place said part into engagement with the power means, catch means forlholding' said member in shifted position, means automatically operable to release said catch means to permit a when-the carriage'has been retracted a predetermined extent, an'd line spacing means actuated by a `movement of said mechanism.`

17 The combination with the platen-roll of a typewriter, of power means, mechanism normally disengaged from said power means and adaptedwhenengaged with suchlmeans to coperate therewithto impart retracting movements to the platen roll, and 'pneumatically-operated perforated sheet controlled` mechanism for engaging and releasing the power means at predetermined intervals.

'18. The combination with the platen-roll ofa typewriter, of power means, a carriage attached to and movable with said platen" roll and having a part capable-of movement In testimony whereof, I have hereunto to engage and disengage saidpower means signed my name to this specification in the to coperateftherewith to move the carriage presence of two subscribing Witnesses. and platen-roll to retracted position, and5 PHILLIP JACOB DREHER.

5 mechanism automatically operable to move l Witnesses:

said part to engage said means at predeter- I ,0. W. OWEN, mined intervals. g E. E. THOMAS. 

